Sikorsky S-67 using a variable-pitch ducted directional control fan instead of a conventional tail rotor. U.S. Army sponsored tests are seeking comparisons in maneuverability. From Vertiflite, May/June 1974 (page 7).
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Sikorsky S-67 with variable pitch, ducted, directional control fan

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Sikorsky S-67 using a variable-pitch ducted directional control fan instead of a conventional tail rotor. U.S. Army sponsored tests are seeking comparisons in maneuverability.

From Vertiflite, May/June 1974 (page 7).

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Added to Vertiflite Images and categorized in — 9 years ago

 

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